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Science27 décembre 2013
© NASAObjectif astéroïde
Conquête de l'espace : pendant que la Chine va sur la Lune, la Nasa cherche un astéroïde où faire atterrir des hommes
Les deux superpuissances se sont fixées des objectifs précis pour 2025. Mais leur affrontement spatial ne s'oriente pas du tout dans la même direction.
